science periodic tablbe

Question 1

who is Dimitri mendeleev?

Answer 1

he organised the element sin the periodic table.

Question 2

how is a chemical symbol written for an element found on the periodic table

Answer 2

the 1st letter has to be capital 2nd the next letter has to be in lower case.

Question 3

what is an a element ?

Answer 3

made up of 1 type of atom and arranged by their properties like metals, non-metals, metaliods.

Question 4

what is a compound?

Answer 4

made of 2 or more elements that are chemically combined.

Question 5

can an element be broken down?

Answer 5

nope!

Question 6

can an compound be broken down?

Answer 6

yep for sure!! (heheheh)

Question 7

what type of change occurs when elements combine to create a compound?

Answer 7

chemical change

Question 8

what is an atom?

Answer 8

atom is the smallest unit or piece, of an element.

Question 9

true or false elements are made with one type of atom?

Answer 9

true ( congrats if you got it correct)

Question 10

if the atomic number is 11. what is the protons and the electrons?

Answer 10

11!!!

Question 11

if the atomic mass is 23(is rounded) then how many neutrons are there ? (hint use some maths)

Answer 11

12 !! ( got it correct ??)